24,24-Difluoro-25-hydroxycholecalciferol

24,25-Dihydroxycholestans and process for preparing the same

24-Cyclopropylcholene-3.beta., 22-diols and esters thereof

24-Methyl-14A -aza-D-homo-cholestadiene derivatives

24-Methyl-14a-aza-D-homo-cholest-8(9)-enes

24-Nor-1,4-choladiene-3,22-dione

24-Oxo-14a-aza-D-homo-cholestadiene derivatives

25-Alkyl-3.beta.-hydroxycholest-5-en-7-ones and esters thereof

25-Alkylcholest-5-ene-3 .beta.,22-diols and esters thereof

25-Alkylcholest-5-ene-3.beta.,22-diols and esters thereof

25-Desacetyl rifamycins

25-Halocholest-5-ene-3.beta.,22-diols and esters thereof

25-Hydroxy-24-oxocholestane derivatives and preparation thereof

25-Hydroxy-26,26,26,27,27,27-hexafluorocholecalciferol

25-Hydroxycholecalciferol-23,24-.sup.3 H and process for the pre

25-Substituted-5.alpha.-cholestane-3.beta.,22S-diol

26,26,26,27,27,27-Hexafluoro-1.alpha.,25-dihydroxycholecalcifero

2:1 Metal complexes of 2,2',4'-trihydroxy-3,5-dinitroazobenzene

2A,2B-Dihomo-11-deoxy-17(substituted phenyl)-18,19,20-trinor-PGE

2A,2B-Dihomo-15-alkyl PGF.sub.1 .alpha. analogs